Collapsible paper cup



Nov. 6, 1928. 1,690,586

w. J. MAIN COLLAPSIBLE PAPER CUP I Original Filed Jan. 26, 1924 2Sheets-Sheet, 1

INVENTOR ATTORNEY COLLAPSIBLE PAPER cur Original Filed Jan, 26, 1924 g seets-she 2 INVENTOR ATTORNEY-\- a down, and need Patented Nov. 6,1928. r

UNITED STATES wmunl J.- u'nr, or wnsrronzr,

coimnc'rrcnr, assronoa romm, or

. new Yonx, mm

99mm rnanf our.

Applicatlon'fled January 20,1924, Serial n. seas-2a "a imal as. :1, 1m.7

My invention relates more particularly to a flat folding or collapsiblecup, which is normally fiat like anenvelope but, whenv opened, isprovided with an integral flat bottom, permitting the cup to standnpr-ight.

I am aware that many varieties of the envelope type of cups are to befound upon the market, and the, convenience in packing and cheapness ofthis type of cup is wel recognized, but they have the disadvantage,- ofbeing without a flat bottomwhen opened and, therefore, canno,t-be setdown, but must be held in thehand" when filled or in use. Therefore, oneob'ect of my improvement is to rovide a' flat olding cup, with asuitable Kat bottom, that when in use, it may readily set not becontinually held in thehandJ a In view of the fact that cups of thischar acter are usually made from a single thickness of for the 1p of thecup, which is somewhat inconvenient to drink from, a further object ofmy improvement is to provide acollaps- .ible cup of this character, withan outward fold at the lip thereof to provide a double thickness, uncutedge for the lip of the cup, thereby avoiding the unpleasantness of having the raw edge of the pa 1' comin in contact with the lips when inkingf rom thecup. v a

A further object of myimprovementjis to rovide a single blank, which,,when fol ed by reverse folds on a longitudinal line, will form a saddlefold for the bottom of the cup, and the dia nal corners of the blank areprovided wit tongues extending laterall and longitudinall ,-which areadapte to .form the double-lip folds when the cup is completed.

"In the accompanying drawings, I have shown one form of m improved cup,the p blank being shown in ig..1; Fig. 2 shows "thehlank partiallyfolded to form the saddle fold of the bottom; Fig. 3 presents a' top'plan view of the partially completed cup, as shown in Fig. 2- Fig. 4showsa'further ,development andolding of the cup, the

c. of the blank being secured together; Fig. 5 shows a vertical sectionon t e line h Pa al y completed m? of the'completed cup on the when thecu is opened, so 1 paper and 'have araw or cut edge shown is Fig. 4;Fig. 6 shows the completed cup, in the flat form; Fig. 7 larged verticalsection (partiall distended) shows an en-.

e 7-7 of- Fig. 6; Fig. 8 shows a to plan view of the cupafter it, isopened; view of the cup when. open; Fig. 10 shows the opened cupin sideelevation; Fig. 11 is another side elevation of .the cup atright ig.9-is abottom angles to the view shown in Fig.10'; and Fig. 12 is avertical section of the opened cug taken on the line. 12- 12 of Fig. 10.

. eferring to the drawings, the blank 1 from which. the cup is formed,is shown in Fig. l, and comprises an irregular piece of aper or suitablematerial, preferably punc ed or cut substantially to the form indicated.

The blank thus formed has lateral edges 2' and 3, converging from theends 4 toward the center of the blank or toward the ends of animaginarymedian line, indicated by dotted line A in Fig. 1,-extendingtransversely of the blank at its middle, the halves of theblank beingreverse duplicates. The edge3,

however, ispreferably located further away i from a longitudinal medianline 5, soas -to provide for a strip overlapping the adjacent edge 2,when the blank is folded to form the cup.- A dotted line 6 correspondsin'position to the line 2 and indicates the amount of overlap; the line.6 meeting the end of the line representing the edge 2, as readil -sention of the edge 2 with the line 6, thus preventing more than a doublethickness of aper at these ints when the' cup blankis folded. The bnk'l, may be scored along the line.5 and along the lines 9 and 10,- .thelatter of which meet to form .a diamond- 1 shaped figure, as indicatedin Fig. 1'.

., The blank 1.is foldedin a reverse-,foldalongthe scoring lines 5, 9'and 10, the'fold along the line 5 from the meets thelines 9 ilindflObeing opppsiteto h o d on the portion 6, of the leeg ud nel point whereit.

line within the diamond formed by the lines 9 and 10. In *other words,the edges 2 and 3 of eachhalf of the blank are folded upward toward eachother along the lines 5, 9 10, while theportions of the blank betweenthe lines 9*"and 10 in the diamond are folded downward on the line 5,thus formmga saddle fold, substantially as shown in Fig.2,

where the saddle fold line 5 is indicated by folded. The longitudinallyextending por-" tions of the tongues 11 areadapted to be folded outwardand down, along the dotted line 13, when the cup is completed, as shownin Fig. 6 of the drawings. The overlapping edgesof the blank between theedges '3 and or covered with suitable cement, as

shown in-Fig. 2 of the drawings. Continu I also the laterally extendingportion 12 of the tongue, below the line 13, substantiallyas r ing thefolding, theblank is then brought f to the position shown in Fig. 3 andthe overlapping edges and tongue secured together. This leaves the lowerpoints'or tabs 14 of the 4 saddle fold projecting downward, as shown pletethe cupin the flat form, as shown in in ,3 and 5, and these are thenprefer-. ably folded inward along the line15 to comigs. 6 and 7, thetabs14 being gummed and I secured to the won of the saddle fold. The

of the drawings. V

The tongue 11, as previously stated,

folded edges 15 of the 'saddle fold, will thus determine the bottom ofthe cup, which, in this case will be substantially square when the cup1s opened, as shown in Flgs. Sand 9-' folded outwardly and down as shownin Figs. and 7 over the joint between the two opposlte ends of theblank, so that, as indi-- cated in Figs. 6 and 10', the tongue 11 formalip of double thickness, thereby give ing arounded smooth edge to from.

The cup, whiohhas been described", may be readily manufacturedin itsflat or colla sed form, andpacked and Sold that way. en

it is desired to use the cup, it will be found that, by pressure'uponthe sides of the cup along the fold lines 5-5, as the cup is I showninFig. 6 of the-drawings, the ca will-readily open-and the saddle fo'ld beforced down or unfolded to the position upon which the cup. may stand.The-botspirit and scope of the invention.

reverse 'folds'along a median line 10 blank of paper, having its lateraledges 'ta-' .blank, the blink. being folded along a modian linelongitudinallyand on lines at an of fold forming .tplnguesare adaptedto'be ,t e shown in Figs. 8 to 12, to form the bottom t om 'beingsubstantially square and ,the

particularly so when it is filled with liquid,

thus' resentinga leasingappearancei The overlihnging tongiie 11 on eachside ofthe cup, as shown in- Figs. 10 and 11, forms'a rounded uncut edgeor lip for the cup, from which to drink. F ui'thermore, this overhanginglip protects the on at the seam and does not detract from a pearanceof the cup, but on the contrary, ad apleasing effect to the appearanceof the cup, when viewed from above. u

It will be understood'that while I have shown one form of my improvedcup, I donot wish to be limited to the specific details, forobviously,various modifications therein may be made without departing from the Iil iT o1 1. co apsi e paper on comprising a single-blank of paper, theteral \edges of which taper uniformly from the ends toward the lines 6are, as previously stated, gummed the-middle, and diagonally oppositecorners are provided. with laterally and outwardly extending tongues,'the cup formed thy ngl dinallyof the blank, to form a saddle fold atthe bottom ofthe cu said tapering edges and said tongues being roughtinto overlapping relation and cemented together, the pofits of thesaddle fold being folded inward .and secured to the wall of the saddletoform the bottom of the cup when the latto es are adapted to fold backto form a do lapping oint..

ter'is open, and'the outer parts of Said lelip over. and on each side ofthe over- 2. A collapsible cup, formed of o single- .pering umformlytoward the middle'of the angleto the median line, the last mentioned adiamond through whichihe longitudinal line of fold extends diagonally,the long way of the diamond, thereb forming a saddle fold withflthelat-.eral es of the-blank coming together and overlaptping'at the middle ofthe flat folded blank, e diagonally opposite corners of the;

blank being provided with tongues, extnding laterally and longitudinallyof the blank,

the'lateral portions of which,.when the blank is folded, extend over theadjacent overlapping -wall and thereto and the Z longitudinallyextending portions of the lded back over edge of the-,cupjo' form a,double lip' therefor. M

4 blink t a P p p 3 comprising two similai' halves on each side in whichone of the tapering edges on' each of a median transverse line, theedges of each half'of said blank on opposite sides thereof half of theblank tapering inward toward is wider than the other edge, so that whenm the ends of said transverse line, and ton ues the blank is folded toform a cup, adjacent -projecting laterally and longitudinally rom edgeson the same side of the blank willopposite diagonal corners ofsaidjblank. overlap.

v '4. The cup blank as claimed in claim 3, WILLIAM J. MAIN.

